BLACK-6X6 FENCE POST PLASTIC CAP- Pick a Pack (5 5/8 X 5 5/8) Pressure Treated Wholesale/BULK pricing (3) Fence Post Plastic Black Caps 6X6 MADE IN THE U.S.A. Cap should be pre-drilled if you are going to secure with a nail. EXACT INSIDE DIMENSION OF THIS CAP IS (5 5/8" X 5 5/8") Bulk Pricing-The more you buy the less each cap costs.. Buy 3 for $13.17 which means you pay $4.39 each and save 13% Buy 5 for $20.95 which means you pay $4.19 each and save 17% Buy 10 for $39.90 which means you pay $3.79 each and save 25% Buy 15 for $53.85 which means you pay $3.59 each and save 29% Buy 25 for $82.25 which means you pay $3.29 each and save 35% Buy 35 for $111.65 which means you pay $3.19 each and save 37% Buy 50 for $149.50 which means you pay $2.99 each and save 41% Buy 75 for $209.25 which means you pay $2.79 each and save 45% Buy 100 for $259.00 which means you pay $2.59 each and save 49%